• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Challenge with Phase Splitter

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gerrittube

gerrittube

Member
Joined 2018
I rebuilt this stage and it’s OK now with a 6SN7. I haven’t found a faulty resistor, so I haven’t found a real cause. My B+ is 600 VDC, with 400 VDC for my driver and phase inverter. All regulated and very stable.

Next thing is to compare this phase inverter with a MOSFET phase inverter. Balance with the directly coupled MOSFET stage seems to be even better. Still work in progress!

Regards, Gerrit
 
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